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Table 1 Number and locations of ZIBs and RBs for standard test systems

From: Weak bus-constrained PMU placement for complete observability of a connected power network considering voltage stability indices

Test system

Size (bus, lines)

No. of ZIBs

Loc. of ZIBs

No. of RBs

Loc. of RBs

14- bus

14,20

1

7

1

8

39- bus

39,46

11

1, 2, 5, 6, 9, 11, 13, 14, 17, 19, 22

9

30, 31, 32, 33, 34, 35, 36, 37, 38

118- bus

118,186

10

5, 9, 30, 37, 38, 63, 64, 68, 71, 81

7

10, 73, 87, 111, 112, 116, 117

300- bus

300, 411

65

4, 7, 12, 16, 18, 23, 28, 29, 30, 33, 36, 39, 40, 52, 54, 56, 57, 62, 65, 70, 71, 72, 73, 82, 94, 95, 96, 107, 108, 109, 110, 111, 112, 113, 123, 129, 130, 137, 139, 143, 144, 145, 147, 148, 153, 172, 173, 174, 189, 191, 198, 205, 216, 219, 223, 245, 246, 266, 270, 271, 272, 273, 276, 291

69

69, 150, 164, 192, 201, 206, 209, 212, 215, 218, 220, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 275, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 292, 293, 295, 296, 297, 298, 299, 300